Minoxidil38304-91-5100 % similar Triaminodil55921-65-897 % similar 2,4-Diamino-6-chloropyrimidine 3-oxide35139-67-451 % similar 2,4-Diaminopyrimidine 3-N-oxide74638-76-940 % similar 1,6-Dihydro-6-imino-4-(1-piperidinyl)-1-(sulfooxy)-2-pyrimidinamine83701-22-832 % similar